Developer console messes up letterboxing size
In 13.0a2, the developer console messes up with the browser size.
Steps to reproduce:
- Visit some website in a tab (any site, as long as it isn't exempt from RFP)
- Open another tab, and visit another website (same, the only requirement is that it isn't RFP-exempt)
- Open the inspector, and make sure it's anchored to the page (e.g., to the right side of the browser)
- Switch to the tab opened in 1.: it will have the same width of the tab opened in 2., and will be centered, even though the inspector isn't open in that tab.
/cc @ma1